[Folwren]

Another thought on the fact that they sent Frodo off with the ring and didn't take it upon any of themselves is probably because he was the one who would least likely fall to it's power, and if he did, he couldn't really do much with it. If Gandalf or Galadrial took it, it would be, in the end, just as bad as if Sauron took it back and their purpose would be defeated. They couldn't let men take it because then invariably Sauron would get it back. Perhaps a Hobbit was their only chance...even if the chance was slim...and even though the odds were a million to one, there was that one and they had to take it, because there was no other way.